Tubular metal stay for molds



Dec. 29, 1964 ALzlARl TUBULAR METAL STAY FOR MOLDS Filed July 2 1962 4 Sheets-Sheet l H baiof: Q1

INVENTOR. Lou/.s ALzlAm im @MM Dec. 29, 1964 L.. ALzlARl 'l TUBULAR METAL STAY FOR MOLDs 4 Sheets-Sheet 2 Filed July 2 1962 Fig. 8

INVENTOR Louis ALzlAR www www ATTORNEY Dec. 29, 1964 L, ALZ|AR| 3,162,922

TUBULAR METAL STAY FOR MOLDS Filed July 1962 4 Sheets-Sheet 5 FIJO 1v1/Ewan. Lows Amman TTK Dec. 29, 1964 l.. ALzlARl TUBULAR METAL STAY FOR Moms 4 Sheets-Sheet 4 Filed July 2 1962 INVENTOR Lows AL'zlARi ATTORNEY 3,162,922 TUBULAR METAL STAY FR MIJBS Louis Alziari, 2S Boulevard Carabacel, Niee, Alpes-Maritimes, France Filed .luiy 2., 1952, Ser. No. 206,843 Claims priority, application France, .Iuly 7, 1961,

6,892, Patent 1,294,479 7 Claims. (Cl. 25--l31.5)

My invention has for its object an arrangement for staying molds or the like structure during the erection of a building. Although said arrangement may receive other applications, it is particularly suitable for staying the structures simultaneously at two dierent levels as in the case of floors made of reinforced concrete and incorporating visible beams in which case it is necessary to stay simultaneously the lower surface of the mold and the sides of the beam with reference to the upper surface of the oor.

According to my invention, I resort to a stay including a metal tube provided with openings distributed at different levels, a cross-member adapted to slide freely over said tube and guided by it, while a sleeve may be shifted along said tube and be keyed thereto by means of a spindle passing through one of the openings of the tube and lastly, means for gradual adjustment iitted between the sleeve and the cross-member to dene the height of the latter, said means including preferably a tubular member coupled threadedly to the sleeve and carrying the cross-member. It is thus possible to adjust vertically the position of the cross-member with reference to the central stay first in an approximate manner through selection of the opening in the tubular stay in which is tted the pin which is to hold the sleeve in its vertical position and then in a more accurate manner, by screwing the intermediate member carrying the crossmember over the sleeve.

In the accompanying drawing illustrating my invention, FIGS. 1, 2 and 3 are an elevational view, an axial cross-section and a plan view of a first embodiment.

FIGS. 4 and 5 are a front view and a side View of a simplified embodiment.

FIGS. 6 and 7 illustrate the positioning of an edge plank against a supporting wall according to conventional methods and with my improved stay respectively.

' FIG. 8 illustrates diagrammatically the making of a concrete oor according to conventional methods.

FIG. 9 shows a manner of making such a iloor with the arrangement according to FIGS. 1 to 3,

FIG. l shows a stay designed for the making of visible beams.

FIG. 1l is an elevational partly sectional view of a further arrangement for the making of visible beams in a floor.

FIG. l2 is a sectional viewkthrough line XII- XII of FIG. ll after removal of the molding parts.

FIG. 13 is a cross-section of the cross-member through line XlII--XIII of FIG. 12, and

FIG. 14 is a partly sectional end view of said beam.

Turning to FIGS. 1 to 3, the tubular metal stay 1 is provided with vertically spaced openings 2 and it carries a freely slidable sleeve 3 which may be secured approximately at the desired level by a transverse cotter 4 passing through an opening in the sleeve and the selected opening 2 in the stay. The sleeve 3 is sufficiently long for it to be closely guided and it is provided near its upper end with an outer thread 3 over which is screwed a tubular nut-shaped member 5 which may be readily turned through action on its lugs 5.

The flanges of the cross-member 6 formed by a channel iron bent over the upper edge of the tubular nut 5. To said cross-member (FIG. 3) is welded or otherwise States arent ice secured between the flanges of said cross-member a collar 7 the inner diameter of which is such that it may slide freely with a minimum clearance over the stay 1. It will be readily ascertained that such an assembly allows an accurate adjustment in position of the crossmember 6 through the nut 5 in spite of the comparatively large spacing between the openings 2 which serve for dening at the start the position of said cross-member while a rigid tting of the cross-member in its adjusted position is ensured by the collar 7. Furthermore, the cross-member which may extend to one side or to both sides ofthe stay may revolve freely round the latter which furthers its use for all applications.

The upper end of the upright is provided with the usual capping plate 8 projecting to one side.

FIGS. 4 and 5 show a simplified arrangement wherein the sleeve 3.a is provided with a number of openings, the spacing between which is reduced and which are distributed in staggered formation along a number of superposed lines 2a, 2'a so as to allow securing the sleeve through a transverse pin to the stay at a level approximating the desired level. Said sleeve., is provided at its upper end with an outer horizontal llange 3 the upper a vertical edge plank L carrying in its turn thehori@ zontal edge plank R. To prevent any rocking of theV latter, it is necessary to engage its free ridge by wooden members I which hold also in position the vertical edge plank L. The application to this case of an arrangement according to my invention as illustrated in FIG. 7 makes such a positioning of the edge planks an easy, speedy and reliable matter. Inspection of FIG. 7 shows that the upstanding edgeipklauks L are automatically held in position between the wall M and the upper end of the stay 1 while the upper horizontal edge plank rests without rocking over the capping plate 8 of the stay, the whole arrangement being brought to the desired level in an accurate manner through adjustment of the sleeve 3 or 3a with reference to the stay.

My invention is particularly applicable to the case where it is desired to make a iloor of reinforced concrete incorporating visible beams. At the present time, the tting of the mold of such `a beam is obtained as illustrated diagrammatically in FIG. 8 by laying a crossmember B over each of the stays S arranged in alignment and adjusted as to height Vand over the successive cross-members B there are laid the board C forming the bottom of the mold together with the mold sides DD which are further held by oblique wood ties B. All these adjustments are long and intricate, and are obtained much more easily, more speedily and more reliably through my invention.

Thus, FIG. 9 shows how it is possible to make use of the apparatus according to FIGS. 1 to 3. The tubular stays are arranged vertically pairwise, as shown at 1-1 to either side of the location of the beam to be obtained, said stays having their capping plates S tlush with the lower ceiling-forming surface of the floor. Over the cross-members 6 which are brought to the accurate level required, there is laid the bottom board C of the mold and the lateral mold boards DD which rest thus on said cross-members 6 While the lateral boards bear laterally against the upper section of the tubular stays 1 1. All the parts forming the mold are thus held rigidly in their accurate positions.

FIG. 10 shows a stay made according to the invensaeaoaa tion which is designed more particularly for the mold- The metal side walls DaDa are carried by the cros` member 6a and held vertically by the ties EaEa. Their spacing may be adjusted as required andto this end the lower end of each side wall is secured forrinstanceV at the desiredpoint longitudinally Vof the cross-'member as provided by a stud l@ formed on the side wall and entering one of a series Vot openings distributed along the upper surface Vof thecroSsmember.V Furthermore, each tierEa is'pivotally secured at its upper end to the side wall and is provided with a series lof openings distributedralong its lower section so as to allowits securing to the crossrnernber by means of a pin. The bottom Ca of the mould is constituted by a board or plate the breadth of which corresponds to the spacing between the side walls Da and is carried by the capping plate Sa of the stay. Since said capping plate allows adjusting as desired and in an accurate manner the difference in level between the upper end of the stay and the cross-member 6a, it is possible to make the improved stay according to FIG. 10, match all sizes and all-cross-sections of beams and to allow the use of the adjusted stay for a metalmould which pro- To either side of their medial section carrying the tube lid, the two angle bars i3, i3' forming the cross-member tzfare separated by a gap or slot 13 or 18' inside which vides obviously all desired advantages of speed, accuracy 'Y and the like.

In the case of FIG. l0, it is necessary to malte an openy ing of the sleeve register with the selected opening of the stayso as to engage therein the locking pin, which operation is not always convenient and does not always allow a speedy operation. On the other hand, the lateral walls ot' the mould are not always held accurately at the desired spacing and their adjustment to a spacing correponding to the desired breadth of the beam is obtained only approximately through stepwise operation;

FIGS. 11 to 14 illustrated an improved arrangement cutting Vout the drawbacks Vof the preceding arrangement and wherein the independent adjustment of the height of the cross-member above ground on the one hand and the height of the bottom of the mould with reference to the cross-member on the other hand and also the adjustment of the location and vertical position of the sides of thev mould are obtained in a gradual and accurate manner. In said figures, Sa designates the actual stay support standing on the ground whereas the horizontal capping plate Sa is carried by the actual tubular stay l sliding in said support lSa so as to be litted therein at the desired level as provided by the following means: over the outwardly threaded upper end of Sa, is screwed a sleeve yll over the upper end of which rests 'a pin l2 passing through the vertically adjustableV stay 1, so as to hold the latter in position.

The cross-member ,6a is formed as fully apparent from FIGS. l2 toA 14 by two angle bars i3 and 13 facing each other, said angle bars being notched in the medial section of their horizontal anges and being welded bothV serving as a guide for'the stay 1 over which said tube EAv may slide a tapped member i9 or 19 (FIGS. l2 and 13) adapted to be locked in position by any suitable clamping means. I may resort for instance to a screw controlled by a handle 2t? and provided with a nut 2l welded over its end and forming a stop, said screw engaging the tapped member 19 or i9 so as to clamp the edges of the angle bars 13 and i3 between a shoulder formedron said member and a washer 22 resting onthe nut 2l.V The ymembers and 19' serve for wedging in position, di-

rectly orrthrough the agency of wooden blocks 23, the lower ends of the sidewalls Zd and 2,4 ofthe mould.

With a View to lockingnal'so in position the upper ends of said` sidewalls, I havey provided the following arrangement: towards each .of their ends, the angle bars i3 and 113k carry extensions formed by two shaped members 25a, 25h spaced with reference to each other and leaving between them as shown in FIG. 14, a gap z' which by reason of the elasticity of thermetal may'close slightly under Vthe actionofV a screw controlled by a handle 26 z and engaging a nut 27 held against rotation; on the other hand, the upper horizontal edge board` 2S or 2.8 (FIG. il) securedV to the upper end of thel corresponding side wall 24 or is nailed to a square 29 to which is pivotally secured thetie Sil or Sil the lower end of which engages freely with a reduced clearance theV gap ibetween the Vshaped members 25a and 25h. t'risv apparent that alter adjusting the tie 3l) or 3d in the desired position, it is ysufficient to tighten the kscrew provided Vwith the 26,50 as to lock perfectly thesidewall 24 or 24 in itsrverticalposition engaging sideways'the bottom 31 of the mould carried by the stay l.

All these adjustments are thus performed separately and directly by independent means with the desired accuracy without any difficulty andy consequently, in a very speedy manner. Y

The novel system including the cross-member with its tubular guide lli and its'locking means and the carrier stay sliding in said guide and adapted to be shifted and removed above the latter, forms thus a novel structure of patentable interest.

What I claim is: t Y

A1. In an arrangement for staying a structure at two diffe-rent levels, the combination oi a tubular vertical metal stay the upper end of which is adapted toengage one levelV of the structure, said stay being' provided in its Y is slidingly fitted. Said tube 14 acts as an intermediate member between the actual cross-member 6a and the sleeve 15 screwed over the tube 14 so as to hold said cross-member at the desired approximative height. A securing pin 16 is inserted underneath said sleeve 15 in the'desired opening o' the stay l which is apparent to View, the sleeve being allowed to rest through the agency of a Washer 17 on'said pin I6 which is advantageously connected with the washer i7 by a small chain. This being'done, Ythe tapped sleeve l5 is rotated so as to be screwed over the outwardly threaded tube 14 whereby the height of the cross-member is adjusted independently rigid with the stay 1.

tal met-al cross-member mounted `to slide freely on the stay in avertical,V direction to engage the other level of the structure, a sleeve surrounding the stay underneath the cross-member and independently thereof, a pinv releasably engaging a selected opening in the lower section Y of the stay to hold the sleeve in a corresponding position, and an intermediate member interconnecting the sleeve with the cross-member and including means for progressively adjusting the rela-tive'vertical spacing between theL sleeve and the crossamernber.

2.' In an arrangement for stayi ga structure attwo dilerent levels, the conrbination'of a tubular vertical metal stay the upper end of which is adapted to engage one level of the structure, said stay being provided in its lower section with vertically spacedopen-ingaa horl-V zontal metal cross-member mounted to slide freely on theV stay in a vertical direction to engage the otherlevel of the structure, a sleeve surrounding the stay underneath the cross-'member and independentlytbereof, a pin rel leasably engaging a selected opening in the lower setion of the stay to hold the sleeve in a corresponding posi` vtion, and an intermediate member coaxially fitted round the stay and interconnecting the Vsleeve with the crossmember andV includ-ing means for progressively adjustmg the relative vertical spacing between the Vsleeve and the" crossmearber;

3. In an arrangement for staying a structure at two diierent levels, the combination of a tubular vertical metal stay the upper end of which is adapted to engage one level of the structure, said stay being provided in its lower section with vertically spaced openings, a horizontal metal cross-member mounted to slide freely on the stay in a vertical direction to engage the other level of the structure, a sleeve surrounding the stay underneath the cross-member and independently thereof, a pin releasa-bly engaging a selected opening in the lower section of the stay to hold the sleeve in a corresponding position, and an intermediate member coaxially fitted round the stay, threadedly engaging the outer surface of the sleeve and supporting the cross-member at a level depending on the amount of engagement between said intermediate member and the sleeve.

4. In an arrangement for staying a structure at two diierent levels, the combination of a tubular vertical metal stay the upper end of which is adapted to engage one level of the structure, said stay being provided in its lower section with vertically spaced openings, a horizontal metal cross-member mounted to slice freely on the stay in a vertical direction to engage the other level of the structure and provided at least to one side of the stay with a longitudinal slot, a slider slidingly engaging said slot, means for locking the'slider in said slot in a position for which said slider serves as a lateral stop for the structure, a sleeve surrounding the stay underneath the cross-member and independently thereof, a pin releasably engaging a selected opening in the lower section of the stay to hold the sleeve in a corresponding position, and an intermediate member interconnecting the sleeve with the cross-member and including means for progressively adjusting the relative vertical spacing between the sleeve and the cross-member.

5. In an arrangement for staying a structure at two different levels, the combination of a tubular vertical metal stay the upper end of which is adapted to engage one level of the structure, said stay being provided in its lower section with vertically spaced openings, a horizontal metal cross-member mounted to slide freely on the stay in a vertical direction to engage the other level of the structure and provided a-t least at one end with a forked section with a tie held elastically between the sides of the forked section and extending obliquely into lateral engagement with the stayed structure, a sleeve surrounding the stay underneath the cross-member and independently thereof, a pin releasably engaging a selected opening in the lower section of the stay to hold the sleeve in a corresponding position, and an intermediate member interconnecting the sleeve with the cross-member and including means for progressively adjusting the relative vertical spacing between the sleeve and the cross-member.

6. In an arrangement for staying a structure at two different levels, the combination of a tubular vertical metal stay the upper end of which is adapted to engage one level of the structure, said stay being provided in its lower section with vertically spaced openings, a horizontal metal cross-member mounted to slide freely on the stay in a vertical direction to engage the other level of the structure, a tapped sleeve rotatably surrounding the stay underneath the cross-member and independently thereof, a pin releasably engaging a selected opening in the lower section of the stay to hold the sleeve in a corresponding position, and an intermediate member coaxially and slidingly iitted over the stay and rigid with the cross-member and threadedly vengaging the outer surface of the sleeve.

7. In an arrangement for staying a structure at two different levels, the combination of a tubular vertical metal stay the upper end of which is adapted to engage one level of the structure, said stay being provided in its lower section with vertically spaced openings, a horizontal metal cross-member mounted to slide freely on the stay in a vertical direction to engage the other level of` the structure, a sleeve surrounding the stay underneath the cross-member and independently thereof, a pin releasably engaging a selected opening in the lower section of the stay to hold the sleeve in a corresponding position and an intermediate member interconnecting the sleeve with the cross-member and including means for progressively adjusting the relative vertical spacing between the sleeve and the cross-member, a tubular support in which is fitted the lower end of the stay and means for progressively adjusting vertically the stay with reference to the support.

References Cited by the Examiner UNITED STATES PATENTS 234,105 11/80 wouet 254-101 1,211,812 1/17 Barnes 25-1s1.5

2,714,755 8/55 Wright 25-131.5 FOREIGN PATENTS 726,874 l3/32 France.

778,393 7/57 Great Britain.

WILLIAM J. STEPHENSON, Primary Examiner. CLAUDE A. LE ROY, Examiner. 

1. IN AN ARRANGEMENT FOR STAYING A STRUCTURE AT TWO DIFFERENT LEVELS, THE COMBINATION OF A TUBULAR VERTICAL METAL STAY THE UPPER END OF WHICH IS ADAPTED TO ENGAGE ONE LEVEL OF THE STRUCTURE, SAID STAY BEING PROVIDED IN ITS LOWER SECTION WITH VERTICALLY SPACED OPENINGS, A HORIZONTAL METAL CROSS-MEMBER MOUNTED TO SLIDE FREELY ON THE STAY IN A VERTICAL DIRECTION TO ENGAGE THE OTHER LEVEL OF THE STRUCTURE, A SLEEVE SURROUNDING THE STAY UNDERNEATH THE CROSS-MEMBER AND INDEPENDENTLY THEREOF, A PIN RELEASABLY ENGAGING A SELECTED OPENING IN THE LOWER SECTION OF THE STAY TO HOLD THE SLEEVE IN A CORRESPONDING POSITION, AND AN INTERMEDIATE MEMBER INTERCONNECTING THE SLEEVE WITH THE CROSS-MEMBER AND INCLUDING MEANS FOR PROGRESSIVELY ADJUSTING THE RELATIVE VERTICAL SPACING BETWEEN THE SLEEVE AND THE CROSS-MEMBER. 